VirtualBox

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Ticket Resolution Summary Owner Reporter
#3407 fixed probable bug in real mode video BIOS => Fixed in SVN/3.1.4 Ninho
Description

Most probably a bug in the real mode video BIOS (int 10h).

Problem, as observed in plain MS-DOS - no ANSI.SYS or similar - running command.com or other plain text mode programs with screen scrolling :

Normally while scrolling the screen up by one line, character attributes from the bottom line (usually line 25) are reinjected to the new bottom line which is "scrolled in". After 25 (or whichever # lines on screen) lines have been scrolled, all displayed lines will have the same attributes.

However using DOS in virtualbox, the lines inserted at screen bottom invariably come with default grey on black attribute (07) !

I have not investigated code used by (in the example) command.com at instruction level, but since the 'right' behaviour I've been seing on all real machines (for almost 30 years!) and only virtualbox exhibits a difference, it has to be a bug in, most probably, the provided video BIOS.

#3270 fixed prefer username for tmpdir creation -> fixed in SVN Martin Kudlvasr
Description

On linux host, when runnin virtualbox as root and then as regular user, the following error emerges: Wrong owner (0) of '/tmp/.vbox-mkudlvasr-ipc' When virtualbox is not run from command line, the error is more cryptic: Callee RC: NS_ERROR_FACTORY_NOT_REGISTERED 0x80040154 This is because the tmpdir is not deleted. I understand from the sources, that it is not deleted for security reasons. Ok, but why not to name the dir .vbox-root-ipc, when vbox is run by root? Fix - prefer username (as in getpwuid) instead of trusting just the env variables. Patch attached. The patch doesn't include proper #ifdefs for non-unix systems. I just don't understand the various macros well enough.

#78 fixed precompiled kmk in 1.3.4 tarball requires additional package byron_clark
Description

The precompiled version of kmk in the 1.3.4 OSE tarball requires libstdc++5 (debian package). I don't remember this being a requirement when I built out of subversion previously. This requirement is not mentioned in the linux build instructions.

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